Method of manufacturing integrated crossover assemblies for suspenders



March 24, 1942.

"M. JOYCE METHOD .OF MANUFACTURINGaBiTKfiB-ATED CROSSOVfiR ASSEMBLIES FOR SUSPENDERS Filed June 21, 1940!,

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Patented Mar. 24, 1942 TT QFFECE METHOD OF MANUFACTURING INTE- GRATED CROSSOVER ASSEMBLIES FOR SUSPENDERS Marion Rogers Joyce, Greensboro, N. 0., assignor to William I. Blanton, Greenville, S. 0.

Application June 21, 1940, Serial No. 341,756

2 Claims.

This invention relates to the manufacture of an interlaced Webbing crossover for suspenders, and the general object of the invention is to provide a completely integrated or at least partially integrated cross-over assemblage, the purpose of which is to facilitate the manufacture of the suspenders.

Ordinarily, the operative who makes these suspenders is under the necessity of arranging and holding in position the independent pieces of webbing which constitute the cross-over, holding them in proper position in pairs while stitching them to the shoulder straps, interlacing them, and holding them in position while stitching them to the back button tabs or directly to the garment, as the case may be, and considerable trouble and loss of time results in the handling of two unconnected pieces, to keep them from overlapping while forcing them into the tightfitting tubular ends of the denim suspender strap.

By the present invention the crossover comes to the suspenders manufacturer, either completely assembled as illustrated in Figure l, or partially fabricated, as shown in Figure 2, greatly simplifying the process of manufacturing the suspenders.

One of the specific objects of the invention is to provide a completely integrated crossover in which the opposite ends of the intersecting pairs of webbing sections are adhesively joined in proper relative position.

Another object of the invention is the provision of one each, of the complementary pairs of webbing sections which go to make a crossover, the webbing sections of one pair being adhesively connected, in proper relative position at their opposite ends, the webbing sections of the other pair being adhesively joined in proper position at one end only, the other end being left free to permit interlacing of the webbing sections of the correlated pairs.

Still another object of the invention is to provide a method of making a pair of laterally arranged strips of elastic webbing having their adjacent ends incorporated in a common elastic cementitious bond, whereby they are secured together, the ends of their elastic filaments anchored, and a cushion provided for the stitches by which the ends of the webbing are united to the adjacent parts of the suspenders.

A further object of the invention is the provision of a method of making the integrated pairs of webbing sections constituting the component members of the crossover.

Other objects of the invention will appear as the following description of a preferred and practical embodiment thereof proceeds.

In the drawing which accompa'niesand forms a part of the following specification, and throughout the several figures of which the same reference characters have been employed to designate identical parts:

composed of parallel webbing strips bonded and cut at intervals, illustrating the method of producing the integrated crossover members; and

Figure 4 is a diagrammatic. view illustrating the method of producingthe crossover members from a continuous strip.

While the invention is useful in relation to the manufacture of any type of suspenders, it is herein illustrated anddescribed as facilitating the manufacture of overall suspenders, in which the adjacent parts between which the crossover is intercalated are of tubular denim, and the crossover itself of elastic webbing incorporating rubber filaments.

As has been suggested in the relating of the objects of the invention, one of the more diflicult and time consuming steps in the manufacture of suspenders is the positioning and holding of the parts whichconstitute the crossover.

The present invention obviates most of the labor and skill essential tothe proper installation of the crossover under former methods of manufacture. The crossover comes to. the suspender manu1 "acturer already completely assembled, as

shown in Figure l, or in two parts readyfor interlacing, as illustrated in Figure 2. In Figure 1, the crossover comprises intersecting pairs l and 2 of elastic rubber webbing sections 3 and 4, the rubber sections 3 and 4 of each pair being positioned parallel to one another and the elastic sections of one pair being interlaced withthe elastic sections of the other pair. The ends of the sections of each pair terminate in a tenacious bonding film 5, which may be a rubber cement or some other rubber composition or similar adhesive. Ihe elastic film 5 may either "merely coat, but preferably impregnate the end.

portions of the elastic strips 3 and 4. The elastic film holds the elastic sections 3 and 4 of each pair in proper relative position during the preliminary life of the crossover, that is to say, from the time of its manufacture until it is stitched into the suspenders. The elastic film also adheres to and anchors the ends of the rubber filaments which are incorporated into the webbing sections 3 and 4, and prevents their breaking away from the ends of the webbing sections under tension, and shortening to a repose position within the fabric of said sections. The elastic film also affords a cushion for the transverse row or rows of stitching which unites the ends of the crossover members to the denim. For installing the crossover shown in Figure 1, it. is merely necessary for the operative to insert the bonded ends of the crossover member, one at a time, in the tubular ends of the denim. To facilitate this insertion the corners of the crossover members are cut off, as at 6 and 1, making the bonded ends convergent. When one of the bonded ends has been inserted in. the denim, one or more transverse rows of stitching are applied, the stitches running through, the cementitious bond. After the operative has successively stitched all four ends of the crossover into the appropriate denim components of the suspender, the Work is completed.

Figure 2 shows a slightly modified form of the invention in which the crossover comes to the suspender manufacturer not wholly integrated, but havingthe elastic webbing sections held in pairs in predetermined positions and ready to be interlaced by the operative When she incorporates thecrossover into-the suspenders. In, this form of the invention. the. opposite ends Sand 9 of one. pair of elastic sections Band 4 are cementitiously bonded. whilethe other pair of elastic webbing strips 3 and 4 are cementitiously bonded only at one end 9. the elastic sections beingfree at. the opposite end [0. It will be apparent that the elastic webbing strips 3 and 4 of each pair are thus held in predetermined relative position, so that it only remains for the operative .to stitch the three bonded ends orthepairs into. the appropriate denim suspender components, then to interlace the elastic sections by running one of the free ends of the elastic sections 3 and 4 over, and the other under the sections of the. opposite pair, and then to thrust the free ends of the elastic webbing sections at the end. l0 into the remaining tubular denim component of the suspenders and to stich it inplace.

It. is contemplated that either. the fully integrated crossover shown in Figure 1 or the partially assembled. crossover shown. in Figure 2- shall be furnished to the Suspender manufacturer, suitably packaged.-

Figures 3 and 4 indicate more .or less diagrammatically a method for making the crossover pairs or. membersshown in Figure. 2. Figure 3 represents two continuousstrips, 3. and 4' of webbing, presumably fed from a reel, and being carried. on a conveyor ll moving in the direction,

of the'arrow in Figure 4. As shown, the strips 3' and 4' are laidside by side, parallel, and in close adjacency... The problem is to divide the resultant wide strip constituted by the narrower strip 3' and 4' into sections, alternate ones of which shall. bethe member l2 ofFigure 2, which is. cementitiously bonded at both ends, and the other alternate sections of.which shall be the member l3 of Figure-2 which is cementitiously bonded only at one end but open at the opposite end. Figure 3 indicates that the relatively narrow strips 3' and 4 are cementitiously bonded together at proper intervals by transverse common cementitious films M of relatively narrow width alternating with cementitious films l5 of relatively wide width, and that the composite wide strip is severed at l6 along one edge of the narrow bonding film I4, also at the point I 1 along the middle of the relatively wide bonding films 15. Thus, are produced the integrated pairs of Webbing sections it and I9 adhesively bonded at both ends and the alternating integrated pairs 20 and 2| cementitiously bonded only at one end.

Apparatus for producing these integrated pairs is diagrammatically illustrated in Figure 4, in which a pair of reservoirs 22' and 23 for liquid rubber cement or the like have discharge valves,

not shown, controlled by the levers 24 and 25 which are actuated from the cams 26 and 21. Said cams operate synchronously. The cam 26 has one. elevation 28. The cam 21 has two diametrically opposed elevations 29 and 33, the elevation 39 being in phase with the elevation 28. At one point in their rotation, the elevations 28 and 39 simultaneously operate the levers 24 and 25 to open the valve of each reservoir so that a film of adhesive of double width is laid upon the parallel strips on the conveyor H beneath the spouts or nozzles 3| and 32, respectively, of the reservoirs 22 and 23. It will be understood that the conveyor ll moves intermittently, the cementitious film being applied during stationary periods of the conveyor. At each step of its movement the conveyor moves a distance equal to the length of the webbing sections of the crossover.

At another period in the rotation of the cams the nose 29 operates the lever 25 while, there being'no corresponding nose of the cam 28, the lever 24 is not operated. Thus, at this time only the reservoir 23 discharges the rubber cement upon the webbing so that a film of single width is produced.

It will be observed that a spring pressed knife 33 is provided between the mouths 3| and 32 of the reservoirs, which knife is upheld by a cam 34 having diametrically opposed elevations 35 and 36. Thus, the knife 33 descends twice during each complete rotation of the cam 34. Said cam is arranged. with its elevations ninety degrees displaced with respect to the elevations upon the adhesive controlling cams, so that in the progress of the strip material beneath the adhesive applying and cutting apparatus, the knife makes a, out just subsequent to the application of the adhesive.

As the knife 33' comes down between the mouths of the reservoirs it, is obvious that it will cut through the middle of the Wide adhesive bond, sharingrit equally with both ends of the severed webbing, while it will come down close to the posterior edge of. the narrow adhesive bond, placing said bond. solely upon one of the severed members.

Arrangedv along the conveyor H at a proper distance from the point of adhesive application and severance is a heating device 31, the purpose of which is to quickly set or vulcanize the cementitious bond so that the integrated pairs of webbing sections. can be quickly packaged. As the cut and severed sections are successively moved step by step by the conveyor, the adhesively bonded ends, both those of single and double Width move in succession over the heater 31 and rest there a moment. At this time a pressure die 38 comes down upon the adhesive films pressing them into intimate contact with the heater and vulcanizing them.

It will be observed from Figure 3 that the edge of the knife 33 has the shape shown at 39 in Figure 3, having divergent branches at its ends which cut away the corners of the integrated web section units.

It will be understood, of course, that the apparatus herein illustrated is solely designed to illustrate a method of manufacture and does not pretend to be themost practical apparatus for carrying out the invention.

It will be understood also, that the specific construction and arrangement of the parts of the cross-over are by way of example, and not to be construed as limiting the scope of the invention as defined in the appended claims.

What I claim as my invention is:

1. Method of making suspender crossover members, each of which consists of a plurality of parallel webbing sections in side by side relation, with cementitious bonding films at both ends of one member and one end of another relation, comprising, providing parallel'lengths of webbing in side by side relation, severing them transversely at intervals equal to the desired length of the members, applying alternate wide and narrow adhesive films transversely of said lengths of webbing at such length intervals that the lines of severance come in the middle of the wide films and at one edge of the narrow films, said films commonly incorporating both lengths, for bonding the severed sections together. I

2. Method of making complementary package units for interlaced cross-overs, comprising providing side by side lengths of elastic webbing, determining imaginary transverse lines of severance on said side by side lengths defining two contiguous pairs of elastic webbing sections of equal length, placing a common uniting patch across said lengths at a, point intersected by the imaginary line between said pairs, placing a uniting patch across the end portions of one of said pairs altogether on one side of the imaginary line defining the end of said pair, and severing said lengths along said imaginary lines.

MARION ROGERS JOYCE. 

